一失足成千古恨

1.A single slip can cause a lasting sorrow.; A false step may cause a lifelong regret.; A mere slip of the foot can mean death.; A moment's error will bring about [cause] sorrow for a thousand years.; A moment's mistake will bring about sorrow for ages.; A slip of the foot would finish all!; A trip at one point may make one woeful for life.; A wrong step results in eternal regret.; One false step brings everlasting grief.; The error of a moment becomes the regret of a lifetime.